Artificial stone ftook and method



' of transverse notches 12 Patented July 31, 1934 WRENCH John It.-Lo ng,Los Angeles, Calif assignor to ElieA. Farron, Los Angeles, Calif.

Application October 23,

3 Claims.

This invention relates to an improved wrench having. among its objects,improved means, whereby greater strength and dependability againstslipping are produced and whereby the 5 wrench can be more quickly andreadily adjusted and applied to a pipe or other object of anypredetermined size. My improvement also provides a structure havingmaximum strength,.rigidity and simplicity, coupled with a minimum ofmaterial. With these and other objects, in view, my inventioncomprisesthe features of construction and combination of partshereinafter described and claimed.

In the accompanying drawing, forming part of this specification, .Fig. 1is a side elevation of my invention, part of the handle being brokenaway; Fig. 2 is a cross section taken on the line 2-2 of Fig. 1, andFig. 3 is a perspective view of the 20 pawl removed from the Wrench. 7

In the drawing, A indicates the handle of my improved wrench whichcomprises a handle bar 10, having a stationary jaw 11 acrossone of itsends and its rearward edge provided with a series forming a series ofpawl engaging teeth .13. Slidably mounted upon the handle bar is a yokeB; the spaced sides or flanges .1 1 of which embrace the sides ofthehandlebar and project backwardly therefrom with the web 30 betweensaid sides engaging the forward-edge of said handle bar. Opposed to jawmember 11 is a movable jaw member C. This movable jaw member C has alongitudinal shank 15 which is pivotally secured between the spacedsides of the 5 yoke by a pivot 16 and is formed with a lateral companionjaw 17 which is adapted to cooperate with jaw 11. Thus the yoke can beslid along the handle bar 10 and the movable jaw member C adjusted withthe jaws 11 and 17 spaced to 40 securely engage and hold an object ofany size desired.

For the purpose of selectively positioning and holding the movable jawmember set at any Y opening position desired,'a hand operable pawl D 45is provided in the yoke B, adjoining the back edge of the handle bar.This pawl consists of a flat bar, pivoted between its ends and freelybetween the sides 14 of the yoke by the pivot 20 so h as to tilt withits inner end towards and away from the rearward edge of the handle bar.The inner end 21 of this pawl is formed with a pair or any desirednumber of transverse teeth 22 facing and adapted to engage part of theseries of transverse teeth 13 on the handle bar and hold the yoke andmovable jaw member C in selected 1933, Serial No. 694,774

longitudinal position. The teeth 13 and 22 are preferably rounded sothat greater freedom in sliding movement of the yoke on the handle baris provided without impairing positive locking engagement between thepawl and handle bar. The end of the pawl opposite the toothed endprojects outwardly from the yoke and rearwardly from the jaws along theback edge of the handle bar to produce a hand operating lever 23 so thatwhen depressed towards the handle bar the yoke can be slid backwardly orforwardly along the handle to adjust the movable jaw.

The rearward end of the shank 15 is cut away along a curved line 25 toprovide a concavity which *permitsfreedom of tilting action by thetoothed end of the pawl when the jaws of the wrench are disengaged, saidaction being limited by an adjustable stop screw 26 threaded through therearward tip end of shank 15 with its inner end adapted to contact withthe back edge of the pawl. A coiled expansion spring 27 seatedincorresponding sockets 28 and 29, respectively in the rearward end ofshank 15 and the toothed tip end 21 of pawl D, automatically tends tohold the pawl in engagement with the teeth of the stationary jaw memberof the wrench. In this position the heel 30 of shank 15 restsagainst'the tip of pawl D in normal at rest position. In this positionthe pawl can be tilted back into wide open position against the tensionof spring 27 by pressing the lever end 23 of the pawl down. This pawlreleasing movement swings the movable jaw back to release any, work bypressing against the heel 30 of shank 15, the curved surface 31 of thepawl bearing against the curved surface 25 of the shank 15, acting as acam to tilt the movable jaw.

When the jaws are adjusted to hold or turn an object, application offorce downwardly upon the handle bar causes the teeth 32 and 33 to biteinto and engage the work during the early part of any movement, thuscausing the movable jaw C to swing back until the stop 26 pressesagainst and holds the pawl tightly engaged with the sta tionary jawmember. Continued pressure causes the teeth 32 and 33 to bite andtightly engage the work without slipping. When the wrench is loosenedand removed from its work the jaws can be adjusted for approximateapplication to an object by sliding the yoke on the stationary jawmember, a shoulder 35 on the stationary jaw limiting jaw openingmovement and a transverse pin 36 between the sides 14 of the yoke andcooperating stop pin 37 on the back of the handle member in the path ofthe yoke pin 1.2- :p f, termin fatented July 31, 1934 ARTIFICIAL1,968,784,. sI QNE FLOOR AND METHOD or MAKING IT Edwin J. Milburn,Chicago, Ill., assignor to Na-' tional Floor Company, Chicago, 111., acopartnership consisting of Arthur E. Burk, Ed win J. Milburn, and JohnA. Nolan No Drawing. Applicatiomoctober 31, 1931, I

Serial N0. 572,445 l 1 Claims. (01. 94-49) This invention relates ingeneraltoan artificial stone composition adapted to be cast and moldedin blocks and other forms and more particularly described for use asflooring, and to the 15 method of makinga flooring or other articles ofthe material.

One of the principal objects of the invention :"is to produce a new andimproved artificial stone ,particularly for flooring which is fireproof,waterin proof, acid-proof and extremely hard when set so that it has avery durable wearing quality.

Another object of the invention is in the provi- .sion of an artificialstone material which is easily :shaped and cut, as with an ordinary saw,and into 3-15 which nails and other fastening devices may be driven orinserted, without cracking the material. Mnother object of the inventionis in the provigsion of an improved flooring material which may the castin blocks and cut to shape'for the purdesigns in color, or to cast thematerial in a continuous slab, either. form of which will harden quicklyand smoothly andmay sbe, smoothed, sanded or polished, as desired.

In carrying out the invention some of the in- 'gredients are thoroughlymixed together dry, and

other ingredients are mixed to produce a wet mixture, and these :twomixtures are then mixed to- :gether and applied it ,the sprface to becovered.

To cover a surface of approximately fifty-five an "to sixty square feetwith a layer one inch thick,

the following ingredients are used; using the volume displaced by onehundred pounds of calcined magnesite as a measure, thoroughly mixtogether the following ingredients producing a dry mixture;

One part calcined magnesite, Two parts of mill run maple sawdust,One-half part of fine limestone screenings, Three gallon measure of finetalc. 40 Mix together the following ingredients producing a wet mixture;

To one hundred pounds or one part of magnesium chloride, on a 60 Baumhydrometer for heavy liquids; after the desired liquid is chtained, addone and one-half gallons of clear emulsified asphalt and mix theingredients until they are thoroughly dissolved.

When the liquid mixture is added to the dry mixture the result and mixis thoroughly agitated and intermingled until it attains the consistencyof mortar, and then one and one-half gallons of paraflin oil are addedto the mixture and thoroughly intermingled and the entire mixture isapplied to the floor or other surface to be covered immediately.

The hardness to which the material sets is govw erned by the strength ofthe chloride solution which is preferably 18 to 20 for use on a woodbase and 20 to 22 if used on a concrete base.

The color of the sawdust afiects the color of oo the composition, maplesawdust producing a composition of lighter appearancethan oak sawdust.

In applying the material to a floor or other surface, all dirt, grease,and oil is removed until the surface is thoroughly clean and a bondingcoatv composed of the chloride solutionand magnesite,

mixed to produce a thin paste, isapplied thereto. If the sub-surface isof stone or concrete, it is preferable to chip the floor at regularintervals and to apply the bonding coat for attaching {10 the mixture toit.

In applying the mixture, it is smoothed in place like mortar and may belightly tamped and leveled with a straight edge and after it has begunto set it is troweled to a desired finish and then allowed to harden orset. The setting time is usually from one to three hours, depending uponthe temperature conditions.

In further finishing a fioor or other surface of this material, it maybe sanded, ground and pol- 3 ished to a very smooth finish and thesurface may be waxed. To produce the best results the sanding orfinishing should be done within two days of the original installation asthe surface becomes very hard. 7

Batches of the material or portions thereof may be colored by addingcoloring matter to the mixture and in producing designs in colors, theseparate batches or portions of the colors should be hardened separatelyto produce a clear line of 3,90 division between the colors.

While the above proportions of the ingredients are believed to producethe best results, some modification is possible to meet variousconditions without departing from the spirit and $35 scope of theinvention.

I claim:

1. An artificial stone comprising the reaction products obtained by theintimate mixture of one hundred pounds of calcined magnesiteg; enoughsawdust to displace twice the space taken by the magnesite, enough finestone screenings to displace half of the place taken by the magnesite,one hundred pounds of magnesium chloride, one and onehalf gallons ofemulsified asphalt;

and sumcient water to make a mixture of the consistency of soft mortar.

2. An artificial stone composition comprising the reaction productsobtained by the intimate admixture of the following wet and drymixturesy.

the dry mixture comprising one hundred pounds of calcined magnesite,enough sawdust to displace twice the place taken by the magnesite,enough limestone screenings to displace half of the place taken by themagnesite, and three gallons of fine talc; and the wet mixturecomprising one hundred pounds of magnesium chloride, enough water tomake a mixture of a density of about 20 Baum, and one and one-halfgallons of emulsified asphalt; the parts being intimately mixed togetherand allowed to harden or set.

3. An artificial waterproof stone composition to produce approximatelyfifty-five to sixty square feet, one inch in thickness and comprisingv amixture of one hundred pounds of calcined magnesite, enough sawdust todisplace twice the space taken by the magnesite, enough fine limestonescreenings to displace one-half the space taken by the magnesite and athree gallon measure of fine talc, one hundred pounds of magnesiumchloride, one and one-half gallons of clear emulsified asphalt, one andone-half gallons of parafiin oil and enough water to make a mixture ofthe consistency of soft mortar.

4. The method of making a composition of matter which consists (1) inmixing magnesium chloride to a density of 18 to 22 degrees Baum; (2)adding and mixing therein one and one-half gallons of clear emulsifiedasphalt until it is thoroughly dissolved; (3 adding slowly and mixing.therein a previously mixed dry mixture comprising one hundred pounds ofcalcined magnesite;

enough sawdust to displace twice the space taken by the magnesitejenough stone screenings to displace one-half of the space taken by themagnesite; and three gallons of fine talc; l) in adding one and one-halfgallons of paraffin' oil to the mixture thus produced and mixing all theingregthe mixture of the consistency of soft mortar dients thoroughlytogether; and (5) in applying to the floor or other surface to becovered and allowing the mixture to set.

5. The method of making an artificial stone composition which consists(1) in preparing a dry mixture consisting of one hundred pounds ofcalcined magnesite; enough sawdust to displace twice the space taken bythe magnesite, enough fine stone screenings to displace one-half thespace taken by the magnesite; and three gallons of fine talc; (2) inmaking a wet mixture consisting of one hundred pounds of magnesiumchloride, enough water to produce a wet mixture of 18 to 22 Baum,'and inadding thereto one and one-half gallons of clear emulsified asphaltuntil it is dissolved; (3) in thoroughly mixing the wet and dry mixturesuntil they attain the consistency of soft mortar; (4) in then adding tothe mixture one and one-half gallons of parafiin oil and thoroughlymixing it therein; and (5) in applying the mixture to the floor or othersurface to be covered and allowing the mixture to set.

6. The method of making an artificial waterproof flooring, of a wet anddry mixture as set forth in claim 5, and inadding thereto an oil havinga paraifin base; in applying the mixture to a surface to be covered; inleveling or smoothing the surface with a straight edge and trowel, in

allowing the mixture to set; and in grinding and polishing the surfaceof the set mixture.

7. The method of applying an artificial stone coating to floor or othersurface to be covered which consists in (1) chipping or scarifying thesurface and (2) slushing it with a bonding solution made up by mixingtogether calcined magnesite, magnesium chloride and water until themixture attains a pasty consistency; (3) in applying thereto a mixtureof the consistency of soft mortar consisting of calcined magnesite,sawdust, stone screenings, talc, magnesium chloride, emulsified asphalt,paraffin oil and water in accordance with claim 5; (4) in smoothing offthe mixture to the desired thickness-and allowing it to set; and (5) insanding, grinding, waxing and polishing the surface as;desired.

' EDWIN J. MIIJBURN. V

